MBBS / BDS Medical Entrance Examination - Cardiovascular System MCQs

# Immunological function of blood is due to:
A. Monocytes
B. Lymphocytes
C. Acidophils
D. Neutrophils

# Blood constitutes how much percent of body part ?
A. 15 %
B. 20 %
C. 65 %
D. 8 %

# Peptic ulcer is most common in people of blood group:
A. A
B. B
C. O

# Immunoglobulin which crosses placenta is:
A. IgG
B. IgA
C. IgM
D. IgE

# Normally cardiac cycle takes _____ sec to complete.
A. 0.1
B. 0.08
C. 0.01
D. 0.8

# Thickest layer in heart is:
A. Epicardium
B. Endocardium
C. Pericardium
D. Myocardium

# Blood supply to heart vessels is by:
A. Vasa vasorum
B. Vasa nervosum
C. Blood flowing through the vessels
D. Both a and c
# Chordae tendinae is found in:
A. Auricles of the heart
B. Ventricles of the brain
C. Sinus venosus
D. Ventricles of the heart

# The two major opening of the left ventricle are:
A. Pulmonary vein and aorta
B. Tricuspid valve and pulmonary artery
C. Bicuspid valve and aorta
D. Inferior vena cava and aorta

# Which of the following is the correct pathway for propagation of cardiac impulse ?
A. SA node - AV node - Bundle of His - Purkinje Fibers
B. AV node - Bundle of His - SA node - Purkinje Fibers
C. SA node - Purkinje Fibers - AV node - Bundle of His
D. Purkinje Fibers - AV node - SA node - Bundle of His

# The pacemaker of heart is:
A. SA node
B. AV node
C. Bundle of His
D. Purkinje Fibers

# Aorta pierces the diaphragm at the level of:
A. T8
B. T10
C. T12
D. C6

# Which of the following vitamins has closest relationship with blood ?
A. Vit A
B. Vit D
C. Vit E
D. Vit K

# Diaphragm is supplied by _________ arteries.
A. Coronary
B. Phrenic
C. Renal
D. Vasa vasorum

# The first branch of the human aorta is:
A. Brachiocephalic artery
B. Coronary artery
C. Left common carotid artery
D. Left subclavian artery

# The innermost layer of the blood vessels is made up of :
A. Ciliated epithelium
B. Endothelium
C. Columnar epithelium
D. Squamous (pavement) epithelium

# The longest vein in the human body is:
A. Inferior vena cava
B. Subclavian
C. Long saphenous
D. Jugular

# The instrument used to measure blood pressure is known as:
A. Electrocardiograph
B. Barometer
C. Manometer
D. Sphygmomanometer

# The velocity of flow in blood vessels is determined by:
A. caliber of blood vessel
B. viscosity of blood
C. pressure difference between two ends of blood vessels
D. all of the above

# About ____ percent of the total ccardiac output goes to the kidney.
A. 10%
B. 15%
C. 25%
D. 30%

# Bradycardia occurs in:
A. Pilots
B. Athletes
C. Surgeons
D. Chess players

# CCU stands for:
A. Cardiac care unit
B. Coronary care unit
C. Cancer care unit
D. Cardiological care unit

# Which of the following procedures is used to assess the human blood vessel?
A. Angiography
B. Tomography
C. Venography
D. Electromyography

# Blood pressure is higher in:
A. infants
B. adolescents
C. adults
D. aged people

# Which of the following has single layer of endothelial structure?
A. Arteries
B. Veins
C. Capillaries
D. Lymphatic vessels

# A patient with high fever will most likely demonstrate the sign of:
A. increased pulse rate
B. increased appetite
C. decreased sweating
D. increased urinary output

# Least blood pressure is at:
A. Vein
B. Vena cava
C. Aorta
D. Capillary

# Venous system of frog differs from that of rabbit in presence of:
A. Hepatic portal system
B. Renal portal system
C. 3 vena cava
D. Hepatic vein

# The pacemakers of heart of Rabbit are made up of:
A. Muscle cells
B. Nerve cells
C. Receptor cells
D. Neuromuscular cells

# Albumin is one of the plasma proteins synthesized in:
A. Adrenal gland
B. Spleen
C. Liver
D. Pancreas

# Universal donor blood group of human beings is:
A. Group O
B. Group AB
C. Group B
D. Group A

# Arteries are:
A. thin walled and blood flows under diminished pressure
B. thick walled and blood flows under high pressure
C. thin walled and blood flows under high pressure
D. thick walled and blood flows under diminished pressure
# The blood in the mammalian heart pumped by the right ventricle pass out of orifice, which is guarded by:
A. Tricuspid valve
B. Bicuspid valve
C. Pulmonary valve
D. Aortic arch

# Blood clot inside a blood vessel is known as:
A. Thrombus
B. Fibrinolysis
C. Thrombosis
D. Clot

# Hepatic portal system originates from:
A. Liver
B. Kidney
C. Diaphragm
D. Different parts of alimentary canal

# A person has blood group A, means he/she has:
A. A antigen in plasma
B. B antigen in plasma
C. A antigen in RBC
D. B antigen in RBC

# Blood capillaries are made up of:
A. Endothelium and muscle fibers
B. Endothelium and connective tissue
C. Endothelium and muscular layer
D. Endothelium only

# Tunica adventitia is part of:
A. Testes
B. Scrotum
C. Blood vessels
D. Kidney

# The function of spleen in adults is:
A. Secretion of hormones
B. Formation of blood
C. Development of macrophage
D. Phagocytosis of old RBCs

# In an adult human being,spleen is necessary for:
A. Storage of blood
B. Detoxification of drug
C. Formation of blood
D. Providing immune response

# The full form of MI, an acute and very serious cardiac disease is:
A. Myocardial infection
B. Myocardial infarction
C. Myocardial incoordination
D. Myocardial inflammation

# Anticoagulant used to store blood in the blood bank is:
A. Citrate, phosphate, dextrose and often adenine solution
B. Dextrose solution
C. Normal saline
D. Potassium citrate

# Blood grouping is important for:
A. Diagnosis of blood disease
B. Blood donation
C. Blood transfusion
D. Detection of AIDS

# Following substances are the buffering agents of human body except:
A. Hemoglobin
B. Protein
C. Carbohydrate
D. Phosphate

# For blood clotting, fibrinogen is changed into fibrin with the help of:
A. Antithrombin
B. Thrombin
C. Platelets
D. Vitamin K

# What is the function of blood platelets?
A. carry hemoglobin
B. aid in coagulation of blood
C. ingest bacteria
D. transport CO2

# Blood is red in color due to the presence of:
A. Erythrocytes
B. Thrombocytes
C. Hemoglobin
D. Leukocytes

# The rate of heart beat in a new born babby is about:
A. 60/min
B. 70/min
C. 120/min
D. 160/min

# Extracellular fluids is rich in the following except:
A. Na+
B. HCO3-
C. Ca++
D. K+

# Bleeding can be due to all of the following causes EXCEPT:
A. Decrease in calcium
B. Thrombocytopenia
C. Deficiency of coagulation factor
D. Deficiency of white blood cells

# Hemostasis means:
A. Coughing out of blood
B. Resistance of blood flow
C. Coagulation of blood
D. Internal regulatory mechanism